Method for data transmission, and base station and communication system

一种数据传输方法、基站的技术，应用在数据传输技术领域，能够解决降低频谱利用效率等问题，达到提高频谱利用效率的效果

Active Publication Date: 2011-08-31
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] By providing a transmission method, base station and communication system, when using semi-persistent scheduling for uplink data transmission, it can solve the problem that different user equipment cannot perform data transmission on the same time-frequency resource, which reduces the spectrum utilization efficiency.

Method used

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  • Method for data transmission, and base station and communication system
  • Method for data transmission, and base station and communication system
  • Method for data transmission, and base station and communication system

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Embodiment Construction

[0022] Hereinafter, an LTE (Long term evolution) system is taken as an example to describe the embodiments of the present invention in detail.

[0023] Combine below figure 1 A data transmission method provided by an embodiment of the present invention is described in detail. Such as figure 1 As shown, the method includes:

[0024] Step 101, determine to perform semi-persistent scheduling on the data of the user equipment, and set the value of the first information for the user equipment, so that the user equipment determines the value of the reference signal sequence of the user equipment according to the value of the first information cyclic shift value;

[0025] Step 102, acquire the reference signal sequence of the user equipment, perform channel estimation according to the reference signal sequence of the user equipment, and demodulate the data information of the user equipment according to the channel coefficient obtained by performing the channel estimation.

[0026...

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Abstract

The present invention discloses a method for data transmission, and a base station and a communication system, and is applied in the communication field. The method comprises determining semi-persistent scheduling of the data of user equipment; setting a first information value for the user equipment so that the user equipment determines the cyclic shift value of the reference signal sequence of the user equipment based on the first information value; and obtaining the reference signal sequence of the user equipment, carrying out channel estimation based on the reference signal sequence of the user equipment, and carrying out demodulation of the data information of the user equipment based on channel coefficient obtained by the channel estimation. The method provided in the invention enables different user equipment to carry out data transmission on same time-frequency resource when a semi-persistent scheduling mode is used for carrying out uplink data transmission, thereby improving the utilization efficiency of frequency spectrum.

Description

technical field [0001] The invention relates to communication technology, in particular to a data transmission technology. Background technique [0002] The base station of the communication system can use the DMRS (demodulation reference symbol demodulation reference symbol) sequence sent by the UE (User Equipment) to perform channel estimation on the physical uplink data channel, and the base station uses the channel coefficient estimated by the DMRS to carry the physical uplink data channel The data information is demodulated. The demodulation reference signal transmitted by the user equipment is a sequence known to both the base station and the user equipment, and the UE served by the base station needs to transmit the demodulation reference signal during uplink data transmission, and the demodulation reference signals transmitted by different UEs are orthogonal of. The orthogonality of the demodulation reference signals transmitted by different UEs can be realized by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/08H04W72/12
CPCH04W72/042H04W72/1268H04L27/2613H04W72/04H04L5/0051H04W72/23
Inventor 余政薛丽霞范霄安李超君
Owner HUAWEI TECH CO LTD
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